This is why the ratio system needs to be changed. because having this kind of generality in the mindset when one is trying to discern concrete numbers is rediculous.
If this is the case that the ratio system does need to be changed so that a 60:40 really means just that, a match where one character wins 60% of the time and the other wins 40%. If thats NOT what these numbers mean and we are going on a subjective reasoning that, "60:40 means its kinda hard and one character has a definite advantage and should be kinda, a little bit hard for the other character to win" than the entire concept of using numbers to determine matchups is completely meaningless, because the numbers dont actually translate, into anything...
If a DK can really only hope to win 1-2 games out of 100 with a competant DDD, than the ratio should reflect that, and be shown as a 99-1/98-2 matchup
I wish we could do that, but the problem is match-ups get too bad too fast for it to be useful.
Simple example, at equal skill level and at the top of the metagame, Marth can only hope to reliably win 5 out of 95 games, or something similar (again, at the top of the metagame, it's a lot better with aggressive MKs like M2K most of the time, but no marth is really his equal anyway).
60-40s are more like 80%.
When we hit 70-30 as we call it, it's over 99%.
A DK would not win like 1 or 2 games out of a hundred, more like 1 game out of 100,000,000,000,000.
So, there's the basic problem, it just gets too bad too fast, but slight advantages in skill also tip that very quickly, so if you're just a bit better, 60-40 becomes winnable in close to 50% range.
That's why it's simply more useful to make it a difficulty rating BUT it should be mathematically defined in terms of what that difficulty rating means.